Hi Li. The Epson XP-6100 includes four starter ink cartridges (Cyan, Magenta, Yellow, and Black) intended for initial setup. Most of this ink is used to charge the ink delivery system, and the remaining ink will be available for printing. Epson uses ISO/IEC 24711 tests to determine page yield. Please note your results can vary based on print settings, image size, paper type, etc. Regards, Kevin - The Epson Team.